"Back to Earth: Junkman" is a free iPhone game by Marine Interactive Entertainment Limited that challenges players to rebuild civilization after it was nearly destroyed by war. Players explore Earth's ruins, collect resources, develop technology, and deploy staff to scavenge for mankind's remains. The game offers a variety of features, including collection illustrations, technology research and development, staff management, strategic planning, and civilization building.

The gameplay of "Back to Earth: Junkman" is designed to be casual and easy to operate, with offline benefits for players. Weekly card privileges provide additional in-game advantages for a purchase price of USD $4.99, offering benefits like free advertising coupons, increased resource income, exclusive purchases, and more. Players can contact support via email, Facebook, or Discord for any inquiries.